rule win_yarat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.yarat."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.yarat"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { c7461000000000 c746140f000000 c60600 8d4618 8d4da8 3bc8 746b }
            // n = 7, score = 100
            //   c7461000000000       | mov                 dword ptr [esi + 0x10], 0
            //   c746140f000000       | mov                 dword ptr [esi + 0x14], 0xf
            //   c60600               | mov                 byte ptr [esi], 0
            //   8d4618               | lea                 eax, [esi + 0x18]
            //   8d4da8               | lea                 ecx, [ebp - 0x58]
            //   3bc8                 | cmp                 ecx, eax
            //   746b                 | je                  0x6d

        $sequence_1 = { c7430400000000 c7430800000000 8b10 8b4004 8955dc 8945e0 3bd0 }
            // n = 7, score = 100
            //   c7430400000000       | mov                 dword ptr [ebx + 4], 0
            //   c7430800000000       | mov                 dword ptr [ebx + 8], 0
            //   8b10                 | mov                 edx, dword ptr [eax]
            //   8b4004               | mov                 eax, dword ptr [eax + 4]
            //   8955dc               | mov                 dword ptr [ebp - 0x24], edx
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   3bd0                 | cmp                 edx, eax

        $sequence_2 = { 8b8fec0f0000 23c1 83f8ff 7417 51 52 68???????? }
            // n = 7, score = 100
            //   8b8fec0f0000         | mov                 ecx, dword ptr [edi + 0xfec]
            //   23c1                 | and                 eax, ecx
            //   83f8ff               | cmp                 eax, -1
            //   7417                 | je                  0x19
            //   51                   | push                ecx
            //   52                   | push                edx
            //   68????????           |                     

        $sequence_3 = { e8???????? 50 68???????? 56 e8???????? ffb5fcf9ffff 53 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   50                   | push                eax
            //   68????????           |                     
            //   56                   | push                esi
            //   e8????????           |                     
            //   ffb5fcf9ffff         | push                dword ptr [ebp - 0x604]
            //   53                   | push                ebx

        $sequence_4 = { ff5004 8d4e01 03cf 3bf1 740f 8a06 3c2e }
            // n = 7, score = 100
            //   ff5004               | call                dword ptr [eax + 4]
            //   8d4e01               | lea                 ecx, [esi + 1]
            //   03cf                 | add                 ecx, edi
            //   3bf1                 | cmp                 esi, ecx
            //   740f                 | je                  0x11
            //   8a06                 | mov                 al, byte ptr [esi]
            //   3c2e                 | cmp                 al, 0x2e

        $sequence_5 = { f20f5e05???????? f20f104de0 f20f5ec8 0f28c1 e8???????? eb19 6a00 }
            // n = 7, score = 100
            //   f20f5e05????????     |                     
            //   f20f104de0           | movsd               xmm1, qword ptr [ebp - 0x20]
            //   f20f5ec8             | divsd               xmm1, xmm0
            //   0f28c1               | movaps              xmm0, xmm1
            //   e8????????           |                     
            //   eb19                 | jmp                 0x1b
            //   6a00                 | push                0

        $sequence_6 = { 8b08 8b4508 89883c060000 8bc3 5b 8be5 5d }
            // n = 7, score = 100
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   89883c060000         | mov                 dword ptr [eax + 0x63c], ecx
            //   8bc3                 | mov                 eax, ebx
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_7 = { c7400400000000 8b8548feffff 6800010000 3d00030980 746f 3d22030980 7432 }
            // n = 7, score = 100
            //   c7400400000000       | mov                 dword ptr [eax + 4], 0
            //   8b8548feffff         | mov                 eax, dword ptr [ebp - 0x1b8]
            //   6800010000           | push                0x100
            //   3d00030980           | cmp                 eax, 0x80090300
            //   746f                 | je                  0x71
            //   3d22030980           | cmp                 eax, 0x80090322
            //   7432                 | je                  0x34

        $sequence_8 = { c78504ffffff00000080 83e801 741f 83e801 740c c78504ffffff01000000 eb19 }
            // n = 7, score = 100
            //   c78504ffffff00000080     | mov    dword ptr [ebp - 0xfc], 0x80000000
            //   83e801               | sub                 eax, 1
            //   741f                 | je                  0x21
            //   83e801               | sub                 eax, 1
            //   740c                 | je                  0xe
            //   c78504ffffff01000000     | mov    dword ptr [ebp - 0xfc], 1
            //   eb19                 | jmp                 0x1b

        $sequence_9 = { e8???????? 83c40c 5f c64435dc00 8d4ddc b8???????? 5e }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   5f                   | pop                 edi
            //   c64435dc00           | mov                 byte ptr [ebp + esi - 0x24], 0
            //   8d4ddc               | lea                 ecx, [ebp - 0x24]
            //   b8????????           |                     
            //   5e                   | pop                 esi

    condition:
        7 of them and filesize < 8692736
}